1. No category

April 12, 1949.
2,467,161
C. F. SHEELEY
CONTROL FOR CUTTING APPARATUS
2 sheets-shew 1
Filed Aug. 2'?, 1946
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BY
A TTORNEYS
‘ April l2, 1949.
CONTROL FOR CUTTING APPARATUS
Filed Aug. 2'7,_ 1946
2,467,161
c. F. sHEELEY
.
2 Sheets-Sheet 2
INVENTOR.
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2,467,161
Patented Àpr. 12, 1949
UNITED STATES `ATENT oFFlcE
„2,457,161
CONTROL FOR CUTTING APPARATUS
N. J., assigner of
Charles F. Shßeley, ,East Orange,
one-half ,to `>ìutolpert E. Joy, Freeport, N. Y.
Application August 27, 1946, Serial No. 693,300
,11 Claims. (Cl. 5.1--98)
pivots 2% for the pivoted swingable toolsupport I2.
1
This .invention relates to `cutting machines and
particularly to a control means for governing
movement ol a tool reiative to a piece of work. to
be operated upon by said tool.
ln previous rotating disc tool machines, it has
been diiìcult to control in a simple manner the
speed oi advance or the tool toward and into the
work after the cutting action is started. Such a
speed control should be adjustable with ease to
accommodate various sizes of work.
One of the objects of the invention is to con
trol speed of movement of the tool toward the
The outer endof support l2 carries a spindle i3
vupon .which may be mounted _a .rotatablediscelike
.tool lli. .Pulley l5 (Fig. 2) .is connectedby means
of »belt .iii ,to motor driven .pulley il, motor 18
being `mounted `by means Yo‘f bolts L9 (Fig. 1-) to
Work so that 'the approach can be at a relatively
the .pivoted vtool support l2 in any well-known
manner.
As will .be .explained hereafter, any type of yad
justable pivothearing shown generally at 20 may
be used for vholding :the -tool support l2, a pre»
ferred form being shown in Fig. 5.
‘In some »previous devices, the pivoted-tool sup
port li2 .has been rcounter»balanced in some man
rapid rate and the cutting movement at a much
slower rate.
Another object is to provide a means to auto
matically hold the tool in an inoperative position
after having been manually lifted away from the
work following a cutting operation.
rg0
Still another object of the invention is to pro->
vide means for adjusting with ease the point
ner and has been operable so as to bring the tool
manually »into engagement with the work. Upon
completion oí `the cutting operation in such de
»vices,\the»tool has been lifted away from the work
so that a _new piece could be inserted.
Hydraulic cylindertl is supported on adjustable
bell cranks »272, said bell cranks being pivotally
mounted on shaft »23 and supported »by'brackets
where the control mechanism changes the speed
of the tool movement and where the tool is stopped
2t (Figs. A1 and 4) carried‘by frame le. A nut §25
is oscillatably mounted between the short ends of
the bell cranks and said nut is 4elngçaged >by an
adjusting screw
said adjusting screw being
turnable'by manually operated crank handle 21,.
' non completion of a cut so that various size pieces
Lg? work may be accommodated in a machine'
equipped with the invention.
rShes-e and other features, objects, and advan
of the invention will become apparent from
lthe following description and drawings.
»Spacers'rß and 29 are _pinned to screw 25 and serve
-to hcldtheadjusting screw 26 longitudinally rela
tive to the front Wall Sil of the frame 1_6 of the
machine. The spacers have spherical suriaces gil
and 3-22, respectively, so as to _allow for the slight
In the drawings:
Fig. l is a broken vertical view partially in sec
`
>rocking
action of adjusting _screw 2@ as bell @rank
lever is oscillated about pivot 23. The cylinder
2 is a plan View of the apparatus of Fig. 1.
Fig. 3 is an enlarged sectional view of one form
2l is pivotally mounted by bolts »Vl to the long
of hydraulic cylinder.
ends of bell cranksüwß. Piston 33 is slidable `in
hydraulic cylinder 2l, said piston being provided
Fig. 4 is a View along the line t-ll of Fig. l.
Fig. 5 is a sectional view along the line 5--5‘of
2 or one type of bearing that may be used
for a pivot arm.
rí‘he invention is particularly useful on a in_a
with rings .1Min a conventional vmanner or other
40
chine having a rotary type tool such as a saw or
an abrasive disc.
type 0f racking means- The upper end of piston
133 »Carries ,a Connecting rod 35, seid .rod .beine
pivctally mounted at 35 t0 bracket il, said bracket
in turnbeine fastened by boltsëß tu riveted tool
support :l2- vClosure„member „§59 is screw thread
In accordance with the present invention, a
engagedat ¿lll ‘..vith the upperend oíißvlínder
hydraulic control valve is provided which can be 45 _edi-y
2l, there being a suitable packing M providgçlbef
released so that the tool support \lvill advance with
The arrangement is
tweenthe ends of _closureit‘â and the .bottom L112
such that the hydraulic flow rate during move
ment toward the work is changed so that about
of vthe enlarged bore at the upper end „of cylin
der I2l. Adjusting vnuts «.43 are ,provided‘on vthe
n
1.
work.
time the tool contacts the work, the tool sup
port movement is retarded.
Upon completion of «
the cutting operation, the tool support can be
raised upwardly and will lock itself automatically
in a retracted or upper position.
ln a preferred embodiment, frame il) has brack
said brackets carrying
ets l i' `mounted thereon,
screw threaded portionßit‘, of .theconnecting rod
-35 tolimit-the motion of the >piston andftool sup
port inwardly _relative-to -thecylinden flfheiiuid
outlets from the nuid end :i5 of cylinder il! are
controlledbya -ñrst uuid-outlet 115 and a ylower
or second outlet dv'lfthe spacing ofthe outletslbe~
2,467,161
ing correlated to each other and the cylinder ac
cording to the particular machine involved.
Pipes 48 and 49 are connected through valves
56 and 5I to a pipe 52. Pipe 52 is connected by
means of liexible lead 53 to pipe 54 mounted on
4
covers the upper iiuid opening 46 to change the
speed of the tool advance.
One form of pivoted support that might be used
for the tool support I2 is shown in Fig. 5, where
in the pivoted arm I2 has conically shaped de
pressions 60 and 1I. A spherically shaped pivot
point 12 may be carried by adjustable bolt 13
said pipe 54 leading to control
valve 55, said valve being controlled by means of
a hand control lever 56. The hand control lever
on one of the brackets carrying the tool support
56 is pivotally mounted at 51 on tool support I2,
spring 58 normally holding said hand control lever 10 I2. A similar spherically shaped pivot 14 may
be mounted in 15 carried by the other bracket
16. The plate 15 may have four adjusting screws
Outlet
located at right angles so as to adjustably posi
flexible
`
thereby make it possible to
connection 6I to reservoir 62, said reservoir be
ing above the level oi cylinder 2 I. Pipe 53 is con
line of the tool support pivot
nected to the inlet end 64 of hydraulic cylinder 15 arrangement. In this way, the exact position of
2 I, there being
the cutting wheel I4 may be accurately adjusted.
The invention is particularly adaptable for
installation on rotary> disc-type cutting tools.
cylinder but serving to
Variations may be made in the construction and
prevent ñuid from passing out through pipe 63
20 details shown without departing from the spirit
and returning to the reservoir 62.
of the invention as defined in the appended
When the pivoted arm I2 is in its upper or
claims.
inoperable position, the weight of the arm will
What is claimed:
be transmitted through connecting rod 35 to
1. Apparatus for controlling the feed of a ro
piston 33. Inasmuch as valve 55 is closed, fluid
cannot escape from cylinder outlets 46 and 41, 25 tary disc tool or the like including a pivoted tool
and the arm will remain '
'
support oscillatable toward and away from a
piece of work, a rotary disc tool mounted on said
The ball check valve 65 prevents fluid from pass
support, means to drive said tool, a hydraulic
ing out of the cylinder. A piece of work to .be
means connected with and governing the pivoting
operated upon is indicated diagrammatically at
61 and held in some suitable manner on work 30 movement of said tool relative to said work, and
hydraulic liow control means connected with
holder 66. Hand control lever 56 is pressed
said hydraulic means normally holding said tool
downwardly which will open valve 55 allowing
support in an inoperative position and openable
iiuid to bow through pipe 52 from ñuid outlets
to allow movement of the tool support toward the
46 and 41. At this time, the piston is in an
work, said control means having outlets there
upper part of the cylinder as indicated by the
from operable to change the movement of said
dot-dash line 68 (Fig. 3) so that both inlets 46
and 41 are open.
The position of inlet 46 is
Y40
hydraulic means and tool support from a fast
to a slow rate at a predetermined point in the
travel of said tool toward the work.
2. Apparatus for controlling the feed of a
rotary disc-like tool including a pivoted tool
support oscillatable toward and away from a
piece of work to be operated upon by said tool,
a hydraulic cylinder means connected to said
said tool support towards the work,
flow control means
port, and therefore the
erned by the position of adjusting nuts 43, said
nuts upon engagement with guide 39 serving to
stop the downward movement of the piston above
the second or lower iluid outlet 41. When it
is desired to raise the piston, handle 56 is grasped
and the tool support and tool lifted upwardly.
Fluid will iiow from reservoir 62 through pipe
63 and check valve 65 into the cylinder 2I .
hydraulic iiow control means.
3. Apparatus for controlling the feed of a ro
When 60
the handle 56 is released, ball check valve 65
will close so that the pivoted tool support will
be held in its upper or inoperable position inas
much as liquid will not be able to escape from
cylinder 2 I .
The broken lines at I4’ show the wheel after
it has completed a cut through the work shown
diagrammatically at 61, there being suitable
clearance means provided in the work holder 66.
The dashed lines at I4” show the travel of the 70
wheel that might be utilized with a different kind
where the tool engages the work.
of work holder or larger work. The broken lines
at 22’ indicate a lowered position of the cyl
4. Apparatus for controlling the feed of a ro
tary disc-like tool including a pivoted tool sup
inder to lower the point where the piston ñrst
75 port advanceable toward a piece of work, a hy
2,467,161
5
draulic cylinder controllable by a fluid flowable
therethrough, a piston movable in said cylinder
for governing movement of said tool support, a
pair of spaced fluid outlets in said cylinder, and
said outlets, and means to adjust the position
a control valve for said fluid outlets, said valve Cil
of said cylinder relative to said support so as to
adjust the location of the first of said outlets
relative to said piston and thereby the point of
change of speed of said piston in said cylinder.
normally being closed to prevent movement of
the tool support said piston being movable at a
fast rate of speed when said control valve is
ñrst opened to allow fluid to flow from both of
said outlets and at a slower rate of speed after
said piston has moved in said cylinder a prede
termined distance to cut off fluid flow from one
of said outlets.
5. Apparatus for controlling the feed of a ro
tary disc-like tool including a pivoted tool sup
port movable toward a piece of work, a hydraulic
cylinder and piston movable therein for govern
ing movement of said support toward a piece of
work located in the path of the tool, a pair of
spaced fluid outlets in the wall of said cylinder,
and a control valve connected with said lluid out
lets adapted to control the flow of fluid there
from, said piston being movable at a fast rate
of speed under the urgence of said tool support
when said control valve is opened to allow fluid
to flow from both of said outlets, and at a slower
rate of speed after said piston has moved in said
cylinder a predetermined distance to cut off fluid
Q. Apparatus for controlling the feed of a ro
tary disc-like tool including a tooi support mov
able toward a piece of work, a hydraulic cylin
der and piston movable therein for governing
movement of said support, a pair of spaced out
lets, fluid control means for said outlets, said pis
ton being movable at a fast rate of speed when
said control means is first opened and at a slow
er rate of speed when liuid flow is cut-off from
one of said outlets at a predetermined point of
travel of the tool toward the work, and ad
justable means associated with said piston to stop
the same at a predetermined point and thereby
limit the movement of said tool support relative
to the work.
10. Apparatus for controlling the feed of a ro
tary disc-like tool including a frame, a pivoted
tool support adjustable toward a piece of work
on said frame, a hydraulic cylinder and piston
slidable therein for governing movement of said
support, said cylinder and piston being connected
between said tool support and said frame, a pair
of spaced outlets, fluid control means for said
outlets, said piston being movable at one rate of
flow from one of said outlets at a predetermined
speed when both of said outlets are opened and
30
point of travel of the tool toward the work.
at a slower rate of speed when a'ñrst of said out
6. Apparatus for controlling the feed of a ro
lets is rendered ineffective by said piston, means
tary disc-like tool including a pivoted tool sup
for adjusting the position of said cylinder on said
port oscillatable relative to a piece of work, a
frame so as to change the point at which said
hydraulic fluid cylinder and piston slidable there
in for governing movement of said support, a
check controlled inlet connection at one end of
said cylinder, a pair of spaced fluid outlets in
said cylinder wall, a control valve for said fluid
outlets adapted to control the flow of ñuid from
said outlets, said piston being movable at a fast
rate of speed when said control valve is first
opened to allow the llow of fluid from said out
lets and at a slower rate of speed after said pis
ton has moved in said cylinder a predetermined
piston renders said first outlet ineffective, and
adjusting means to limit the movement of said
piston relative to said cylinder and thereby limit
the movement of said tool support relative to the
work.
11. Apparatus for controlling the feed of a
rotary disc-like tool including a frame, a pivoted
tool support having an adjustable pivot and oscil
latable relative to a piece of work on said frame
a hydraulic cylinder and piston slidable there
in for governing movement of said support, said
distance to cut off fluid flow from one of said 45 cylinder and piston being connected between said
outlets, and a liuid reservoir connected to said
tool support and said frame, a pair of spaced
cylinder inlet connection and to said outlets.
outlets, ñuid control means for said outlets, said
'7. Apparatus for controlling the feed of a
piston being movable at one rate of speed when
rotary disc-like tool including a pivoted tool sup
both of said outlets are opened and at a slower
port movable toward a piece of work, a hydraulic 50 rate of speed when a ñrst of said outlets is ren
cylinder and piston slidable therein for govern
ing movement of said support, a pair of spaced
dered ineffective by said piston, means for ad
justing the position of said cylinder on said
fluid outlets in the wall of said cylinder, and a
control valve having an operating member
frame so as to change the point at which said
the flow from said fluid outlets and normally
piston relative to said cylinder and thereby limit
the movement of said tool support relative to the
work.
CHARLES F. SI-IEELEY.
piston renders said ñrst outlet ineffective, and
mounted on said pivoted tool support controlling 55 adjusting means to limit the movement of said
preventing flow therefrom, said valve allowing
fluid flow to take place upon operation of said
member so that the tool support will commence
movement of the tool toward the work, said pis
60
ton being movable at a fast rate of speed when
said control valve is ñrst operated and at a
slower rate of speed after one of said outlets has
REFERENCES CITED
The following references are of record in the
been cut off by said piston.
file of this patent:
8. Apparatus for controlling the feed of a 65
rotary disc-like tool including a tool support mov
able toward a piece of Work, a hydraulic cylin
der and piston slidable therein for governing
movement of said support, a pair of spaced out
lets for said cylinder, ñuid control means for 70
said outlets, said piston being movable at a fast
rate of speed when said control means is first
actuated and at a slower rate of speed after said
piston has moved in said cylinder a predeter
mined distance to cut-off ñuid flow from one of 75
UNITED STATES PATENTS
Number
'786,509
2,142,022
2,157,946
2,262,049
2,354,509
2,360,070
2,361,961
Name
Date
Merritt ___________ __ Apr. 4, 1905
Ernst et al. ______ _- Dec. 27, 1938
Wortendyke ...... -_ May 9, 1939
Robinson ________ _.. Nov. 11, 1941
Dreher __________ __ July 25, 1944
Meyerbach ______ __ Oct. 10, 1944
Pruitt ____________ -_ Nov. 7, 1944
Certificate of Correction
Patent No. 2,467,161.
April 12, 1949.
CHARLES F. SHEELEY
It is hereby certified that error appears in the printed speciücation of the above
numbered patent requiring correction as follows:
Column 3, line 34, for the Word "bow” read jlo'w;
and that the said Letters Patent should be read with this correction therein that the
same may conform to the record of the case in the Patent Oñìce.
Signed and sealed this 27th day of September, A. D. 1949.
[M]
THOMAS F. MURPHY,
Assistant Uommz‘ssz'oner of Patents.